Crypthography helo

[Alen Guroviæ]

hello people
here is example how to hash something
I want to set key for that but i don't know how??
Code works but how can i put secret key code and after that decrypt

sorry for my english :)
Sub Main()

Dim x_str As String = "Some text"

Dim x_message_data() As Byte = Encoding.Default.GetBytes(x_str)

Dim x_hash_code As HashAlgorithm = HashAlgorithm.Create("MD5")

Dim x_hash_message() As Byte = x_hash_code.ComputeHash(x_message_data)

Dim x As Byte

For Each x In x_hash_message

Console.Write(x)

Next

Console.ReadLine()

End Sub

[Jon Skeet [C# MVP]]

Alen Guroviæ <iv***********@zg.htnet.hr> wrote:

here is example how to hash something
I want to set key for that but i don't know how??
Code works but how can i put secret key code and after that decrypt

Hash algorithms don't work that way - they're one way, not two way. You
don't decrypt the results.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Jon Skeet [C# MVP]]

Alen Guroviæ <iv***********@zg.htnet.hr> wrote:

here is example how to hash something
I want to set key for that but i don't know how??
Code works but how can i put secret key code and after that decrypt

Hash algorithms don't work that way - they're one way, not two way. You
don't decrypt the results.

--
Jon Skeet - <sk***@pobox.com>
http://www.pobox.com/~skeet
If replying to the group, please do not mail me too

[Nick Malik]

Hello Alen,

You've asked this same question in three threads on two newsgroups with
different answers each time. Are you understanding the answers?

Creating a hash is not the same as encrypting. Hash algorithms are used for
non-repudiation (aka "signatures"), not for hiding information from prying
eyes.

Do not use a hashing algorithm. Use a private-key encryption algorithm like
TripleDES or AES.

--- Nick

"Alen Guroviæ" <iv***********@zg.htnet.hr> wrote in message
news:cg**********@ls219.htnet.hr...

hello people
here is example how to hash something
I want to set key for that but i don't know how??
Code works but how can i put secret key code and after that decrypt

sorry for my english :)
Sub Main()

Dim x_str As String = "Some text"

Dim x_message_data() As Byte = Encoding.Default.GetBytes(x_str)

Dim x_hash_code As HashAlgorithm = HashAlgorithm.Create("MD5")

Dim x_hash_message() As Byte = x_hash_code.ComputeHash(x_message_data)

Dim x As Byte

For Each x In x_hash_message

Console.Write(x)

Next

Console.ReadLine()

End Sub